GCN Circular 6407
A. Pozanenko (IKI), A. Shulga, A. Volnova (SAI MSU), B. Hafizov, I. Asfandiyarov, M. Ibrahimov (MAO) on behalf of larger GRB follow up collaboration report: We observed optical afterglow of GRB070419A (Stamatikos et al, GCN 6302; Chornock et al. GCN 6304) with 1.5m telescope of Maidanak observatory (MAO). Several exposures in R-band in seeing ~1 arcsec were obtained on Apr. 17 between (UT) 15:20 - 16:25. In a combined image the source at (J2000) RA= 12 10 58.83 DEC= +39 55 34.06 with an error in both coordinates of 0.15" is compatible with the coordinates of Chornock et al. (GCN 6304) and Garnavich et al. (GCN 6406). A photometry of the afterglow using USNO-A2.0 stars is following: T0+ , Exposure, R_mag 0.245 d 11x300 s 22.4 +/- 0.3 Our observation is compatible with global power law decay index 0.9 (Garnavich et al. GCN 6406) suggesting no host galaxy contribution in epoch of our observation. The combined image can be found at http://grb.rssi.ru/GRB070419A/GRB070419A_AZT22_R.jpg This message may be cited.